Nami Island (Namiseom, 남이섬) is a Korean island on the river Bukhan (Bukhangang, 복한강) on the border between Gyeonggi-do and Gangwon-do (approximately one hour and a half drive from Seoul). Although this place is very popular among Koreans, and can be seen in most Korean dramas (specially in romantic scenes where the boy declares his love to the girl), it’s not usually visited by foreign tourists.
The island is small, but quite pretty, perfect to relax for a while and spend the afternoon walking around a beautiful scenery. Now there is a shuttle bus that goes directly from Insadong to Namiseom for around 15,000 KRW the round-trip (more info here), a bit expensive, but probably the most convinient way to get there for tourists, as it is not easy to get there by conventional bus or train (for instructions, check here).
One of the funniest restrooms I’ve ever seen. The walls were made out of soju bottles which had been previously melted down to make them flat.